Hanriot H.320
Twelve Hanriot H.320 Model 1926 obtained in early 1927. Withdrawn from service in 1933. Followed by forty-five more Zmaj-built H.320 Model 1928 examples 1927 to 1929. Delivered with 120 hp Salmson 9Ac engines, but from 1929 re-engined by Zmaj with 110 hp Siemens Sh 12 and from 1937 the 120 hp Vlajkovic Valter NZ-120 engine. Used in the basic trainer role. Between 1933 and 1937 27 aircraft were leased to the Royal Aeroclub (Kraljevskom Aeroklubu) for civil use, but then recalled to JKRV service. Withdrawn from service in 1938. (Civil H.320 registrations with unknown identities include YU-PBO, YU-PCS and YU-PEJ).

Serial	c/no.	Prev. Identity	Delivered	Fate/Notes
	1		1927
	2		1927	to YU-PCU Sept 1934
	3		1927
	4		1927
	5		1927
	6		1927
	7		1927
	8		1927
	9		1927
	10		1927
	11		1927
	12		1927
	1001		1927	to YU-PEK Aug 1937
	1002		1927	to YU-PEL Aug 1937
	1003		1927
	1004		1927
	1005		1927
	1006		1927
	1007		1927
	1008		1927	to YU-PEM Aug 1937
	1009		1928	to YU-PEN Aug 1937
	1010		1928
	1011		1928	to YU-PDB 1935
	1012		1928
	1013		1928
	1014		1928
	1015		1928	to YU-PCT Sept 1934
	1016		1928
	1017		1928
	1018		1928	to YU-PBK 1933
	1019		1928	to YU-PBL 1933
	1020		1928	to YU-PBP 1933
	1021		1928	to YU-PET Aug 1937
	1022		1928	to YU-PBM 1933
	1023		1928
	1024		1928	to YU-PEO Aug 1937
	1025		1928	to YU-PEH Aug 1937
	1026		1929
	1027		1929
	1028		1929
	1029		1929	to YU-PBR 1933
	1030		1929
	1031		1929	to YU-PES Aug 1937
	1032		1929
	1033		1929
	1034		1929	to YU-PCP Sept 1934
	1035		1929	to YU-PEI Aug 1937
	1036		1929	to YU-PEP Aug 1937
	1037		1929	to YU-PCO Sept 1934
	1038		1929	to YU-PDC 1935
	1039		1929	to YU-PDD 1935
	1040		1929
	1041		1929
	1042		1929
	1043		1929
	1044		1929
	1045		1929	to YU-PCR Sept 1934

References:

• LET No.1 (Yugoslav Aviation Museum)